Cork, the eircom League leaders, progressed into the UEFA Cup first round courtesy of the away goals rule after a 0-0 home draw with Djurgarden.
The goal scored in the 1-1 draw in Stockholm two weeks ago proved decisive for Damien Richardson's side as they qualified for the first round proper of the UEFA Cup before more than 7,000 raucous fans at Turner's Cross.
Cork, who defeated Malmo and Nijmegen in last year's Intertoto Cup before going out to French giants Nantes, will be a part of Friday's draw in Monaco.
And they now have a chance of drawing Barclays Premiership sides Everton or Middlesbrough, as well as Bank of Scotland Premier League side Hibernian.
Cork dominated the return leg to such an extent that Djurgarden goalkeeper Dembo Tourray emerged as man of the match with a string of quality saves.
The Gambian international goalkeeper denied Neale Fenn (twice), John O'Flynn and George O'Callaghan as Cork did everything but score in an entertaining match.
The capacity crowd were on their feet for the closing stages as the ground was gripped by tension mixed with anxiety.
And after four minutes' additional time, Luxembourg referee Luc Wilmes ended a riveting contest to leave Cork dreaming of meeting one of European football's big guns.